Talking machine



Dec. 29, 1931. c,` COLLARQ v 1,838,531

TALKING MACHINE Filed Nov. 17, 1930 5 sheets-sheet 1y O C (ff/,623mm Dec. 29, 1.931. c. coLLARo 1,838,531

TALKING MACHINE Filed NOV. 17,*1930 3 Sheets-Sheet 2 D812.` 29, l v C, COLLAR@ TALKING vMACHINE Filed Nov. 17, 1950 5 Sheets-Sheet 3 Y Mw Patented Dec. 29, 1931 UNITED `STATES rA'rEN'r OFFICE OHRIsrOrHn OOLLARO, orl PEOKHAM, LONDON, ENGLAND, AssIGNoR 'ro HENRY "i DEVELOPMENTS LIMITED, or LONDON, ENGLAND yTALKING. MACHINE Application led Novemberlf?, 193i), Serial No.

discs in which the sound groove is arranged to travel at a constant linear speed with respect to the recording or producing stylus.

According to the invention a drum, associated with means adapted tofensure itsrotation at a constant speed is provided and to the drum is secured one endof a'iiexible member adapted to be wound on to or off the drum, the other end of the iiexible'member being secured to a insee associated with a second fusee in such manner that both usees rotate at equivalent speeds, one end of'a second flexible member being connected with the smaller end of the second usee and with a: weight or the like means for securing a constant driving eiiort, and a driving connection is provided between the fusees and the turntable.

As will be understood, with such an arrangement the rotation of the fusees Will be such that while.V one wire or flexible memberV is being unwound from the tusee with which it is associated, the other is being wound on 'to its associated usee.

Further, in accordance with the'invention, means are provided whereby upon rotation oit the drum in order to raise the weight, the dri ving connections between the drum and the .ieans provided for securing a constant speed, and between the usees and the turntable are released. A

Conveniently, more particularly in connection with machines intended for recording, the driving connection between the fusee and the turntable is also arranged to cause Vthe turntable, the frame ,carryingthe'same and the fusees to travel in a rectilinearpathwith respect to the stylus.

'In one construction in accordance with the invention, a drum is connected through suitable reduction gearingwith a governor adapti 4.3 ed to ensure a constant speed ot operation of 496,277, and in Great Britain VMarch 13, 1930.

the drum, and with the drum is `connected one end of a wire or flexible member Vadapted to be unwound therefrom by rotation of a usee, to

the larger end of which the other end of the Wire or flexible member is connected, and the said insee is coaxially mounteduupon a shaft with a second fusee in such manner that both usees rotate at the sameangular velocity and to the second insee is connected at the smaller Y end thereoi one end of a second wire or leXible member which is passed over a pulley and `connected at its other end with a Weight.

' Between the fusees and the turntable a positive driving connection is provided. For instance, with the usees may be associated a toothed wheeladapted through suitable gearing to form a driving connection with the spindle towhich the turntable is secured.

Particularly in signed for recording, the housing or frame for the usees and the drum is slidably arranged on a support and the spindle for the turntable or a spindle from which motion is the case of machines deimparted thereto may in such case be arranged in driving connection with a worm whereby the housing or frame will be moved in a rectilinear path with respect to the stylus at a pre-arranged speed to give the number of cuts per inch required in the record.v

With the device above described, in Windjing up the drum the flexible member, connecting the drum with one of the fusees', is drawn fromv the said fusee and wound upon the drum, the connections between the governor and the drum,'and between the usees and the turntable being thrown'out of action during this-operation, while the wire or the like connected with thesecond fusee willbe wound on to the same, thus raising the weight.

At any required position of the recording head the winding is stopped and the weight is allowed to operate to rotate the turntable, a constant linear speed Vbeing maintained throughout the operation by reason of the fact that the wire connected with the drum is arranged to operate at a constant speed, being wound at a constant linear rate on to one fusee thus causing the tusee to rotate at a progressively increasing rate and consequently causing the turntable to revolve at a progressively increasing angular velocity.

The invention will be described further in detail with reference to the accompanying drawings, in which Figure 1 is a view in elevation of a machine in accordance with the invention, and

Figure 2 is a corresponding plan view thereof; while Figure 3 is a view in section of a detail and Figure 4 is a sectional plan view of the same.

In the drawings, 1 represents the bed plate of the machine provided with guides 2 for the saddle or carriage 3 mounted thereon. On the carriage is arranged the drum 4 mounted on the spindle 5 engaging in bearings in the side members 6 and 6a provided on the carriage. On the spindle in question is also mounted a spur wheel 7 and a worm wheel 8, the former being arranged to engage with the pinion 9 which is removably mounted on the spindle 10 and is provided with a handle 11 and a ratchet 12 adapted to engage the pawl 13 with which is associated the spring 14. The worm wheel 8 is in engagement with the Worm 15 rotatably mounted on the spindle 16 and provided with a dog clutch element 17 adapted to engage the dog clutch element 18, the teeth of these elements being arranged so that on the rotation ofthe drum in the direction of the arrow in Figure 1, the driving connection between the dog clutch elements will be interrupted and the worm wheel 19, which is associated with the dog clutch element 18 will not, in such case, operate the worm 20 the pivots 21, 21a of which are arranged in bearings 22 and 22a and the associated worm wheel 23 which is in engagement with the worm 24 .on the spindle oi the centrifugal governor 25, the pivots of which 26 and 26a are arranged in bearings and 27a.

With the end plate 29 of the governor is `arranged to co-operate a brake member in the form of an annulus 30 which has a gimbal mounting, being provided with pins 31 engaged in the arm 32 connected to the braclret V33 and provided with an adjusting screw 34.

The governor in question operates to ensure that the drum 4 will rotate at a constant speed as the wire rope 35 is unwound from it and wound upon the fusee 36 which, together with the usee 37 and the worm wheel 38, is mounted on the spindle 39, vthe ends of which are engaged in bearings 40 and 40a provided in the brackets 41 and 41m.

Thetwo fusees and the associated worm wheel are rotatable at a varying angular velocity corresponding with the conicity of the fusees by unwinding from the fusee 37 a wire rope 42 which passes over the blocks 43 and 44, to the latter of which is connected a weight 45.

T ie worm wheel 38 is in engagement with the worm 46 mounted on the spindle 47 on which and on the same spindle rotatable with the said worm is arranged a worm 48 in engagement with the worm wheel 49 rotatably mounted on a sleeve 50 mounted in the bearing member 51 rigidly connected with thc saddle 3. The sleeve 50 is provided internally with a screw-thread engaging the lead screw 52 which is mounted in brackets 53 and 53a on the bed plate of the machine so that by its rotation the saddle is caused to travel on the guides on the bed plate.

The worm 46 is provided with a one-way dog clutch member 54 engaging a correspondingly formed dog clutch member 55 which is provided with a key-way 56 engaging the Toodrude keys 57 which also engage the sleeve 58 on which the helical wheel 59 is formed, This wheel engages a corrcsponding helical wheel 60 engaged in a collar 61 supported on a collar 62 rigidly connected with the spindle 63 ot the turntable 64 on which the mould containing the wax for forming the record matrix 65 will be supported and moved relatively to the cutter 66. The wheel 60 and its collar 61 is capable of a limited degree of rotary motion about the spindle, the driving connection between it and the spindle being constituted by a strip of spring steel 67 engaged between the pins 68 and 68a provided on the collar.

The purpose of this connection between the driving means and the turntable is to prevent watering, that is to say, an eiiect which is liable to arise in consequence of the varying resistance to rotation oit the turntable under the action Jof the cutter operating upon the matrix.

The operation of the apparatus is as tollows :4-

The cutter, which will normally be a device adapted to be operated by sounds through suitable electrical amplifying devices, is sacured in known manner to a fixed head and the table is traversed with respect to the cutter.

Rotation of the table is secured by rotating the drum 4 through the intermediary ot the pinion 9 and the toothed wheel 7 so as to wind on the drum the wire rope 35 olf the tusee .3.6.

During this operation owing to the overrunning of the dog clutch members 17 and 1,8, the governor will owing to the overriding of the dog clutch members .54 and 55, rotation oit the turntable 64 will be prevented.

The winding off .of the wire rope 1from the fusee 36 will cause the wire rope 42 to be not be operated while, 1'-

wound on to the fusee' 3'?, the weight 45 being thereby raised. The winding operation is carried out until the carriage or saddle 3 is brought into a definite position on the bed l, a scale onthe former and an index on the latter being provided to enable the correct position to be determined. y

Y lllhen the saddle has been brought into the correct position the cutting of the matrix is commenced by removing the handle ll and its associated ratchet l2 from the spindle l0 and thus allowing the weight 45, to descend whereby the rope 42 will be unwound from the 'lfusee 37 at a constant ,linear speed with the result that the :fusees will rotate at `a varying angular velocity,'which will increase as the turntable is moved relatively to the headcarrying the cutter to bringthe cutter towards the centre ofthe matrix in consequence of the rotation of the wormr48 rotating the 'worm wheel 49, the sleeve 500i which constitutes a nut operating in conjunction with the lead screw 52. A'llhe rotation of the wormwheel 46 also causes thesame to drive through the toothed wheels 59 and 60, the spindle 63 of the turntable at a varying anguvelocity which increases as the cutter approaches the centre of the matrix.

In conclusion, it may be pointed out that the invention extends to sound recording vor reproducing machines generally in which the stylus carrier is stationarily secured and the member carrying the record disc or the like is moved bodily relative thereto irrespective the means ttor securing rotation of the turntable or the equivalent.

The expression machine for use in the reproduction of sound as used in the appended claims is to be interpreted as including machines designed to be influenced by sound and to produce a sound record and machines designed to operate upon sound records and thereby function as Vtalking machines. The invention, however, is mainly concerned with n ichines designed 'for use in the production of sound records.

I claim: v

l. A machine `:for use in the reproduction or sound comprising a rotatably mounted drum, a rotatably mounted fusee, a fiexible member secured at one of its ends to the drum and at its other end to the fusee adapted upon rotation of the drum in one direction to be unwound from the drum on to the insee and upon rotation of the drum in the opposite direction to be unwound from the fusee on to the drum, a governor in driving engagement with the ydrum adapted to ensure its rotation at a constant angular velocity, a second usee associated with the firstmentioned insee adapted to rotate at an equivalent speed to the first-mentioned fusee, a turntable in driving engagement with the lusees upon which a record disc is adapted to be supported, a stylus adapted to operate upon the sound record disc-and to travel in a spiral path relative thereto, va second flexibl-e member connected at one of its ends with the second-mentioned fusee, and driving means connected with the other end ofthe second flexible member adapted to provide a constant driving effort whereby the said spiral path may be caused to travel at a constant linear speed relative to the stylus.

2. A machine for use in the reproduction of sound comprising a rotatablyv mounted drum, a rotatably mounted fusee, a flexible member secured at one of its ends to the drum and at its other end tothe fusee adapted upon rotation of the drum in one direction to beunwound from the drum Von to thejfusee and upon rotation of the drum in the opposite direction to be unwound from the usee on to the drum, "a governor in driving engagement with the drum vadapted to ensure its rotation at a constant angular velocity, a

r-iscond fuses associated witiithe first-mentioned'fusee adapted torotate at an equivalent speeu to the first-mentioned fusee, a turntable in driving engagement with the :fusees upon which a record disc is adapted to be supported, a stylus adapted to operate upon the sourd record disc and to travel in a spiral path relative thereto, a second flexible member connected at one of its ends with the second-mentioned fusee,'and a Weight connectedwith the other end of the second flexible memberadapted to provide a con stant driving effort whereby the said spiral path Ymay be caused to travel at' a constant 'linear speed relative to the stylus.

3. A machine for usein the reproduction oi: sound comprising a rotatably mounted drum, a. rotatably mounted fusee, a flexible member secured at one of its ends to the drum and at its other end to the lusee adapted upon rotation of theV drum in one direction to be unwound 'from the drum on to the usee. and upon rotation of the drum in the opposite directionto be unwound from the fusee on to the drum, a governor in driving engagement with the drum adapted to ensure its rotation at a constant angular velocity, a second usee associated with the first-mentioned y fusee adapted to rotate at an equivalent speed to the first-mentioned fuses, a turntable in driving engagement :with the fusees upon which a record disc is adapted to be supported, a stylus adapted to operate upon the sound record disc and to travel in a spiral path relativo thereto, a second flexible member connectedat oneof its ends with the secondadapted upon "rotation of the drum in'order to raise the weight to release the driving engagement between the drum and the governor, and the driving engagement between the usees and the turntable.A

d. machine for use in the reproduction of sound comprising a rotatably mounted drum, a rotatably mounted fusee, a fleXible member secured at one of its ends to the drum and at its other end to the fusee adapted upon rotation of the drum ill One direction to be unwound from the drum on to the fusec and upon rotation of the drum in the opposite direction to be unwound from the insee on to the drum, a governor in driving engag ment with the drum adapted `to ensure its ro tation at a constant angular'` velocity, a second fusse associated with the firstmentioned fusee adapted to rotate at an equivalent spe-ed to the first-mentioned fusee, a turntable in driving engagement with the usees upon which a record disc is adapted to be supported, a stylus adapt-ed to operate upon the sound record disc and to travel in a spiral path relative thereto, a s cond flexible mem i ber connected at one of its ends with the second-.mentioned fuses, driving means connected with the other end of the second fici:- ible member' adapted to provide a constant driving effort whereby the said spiral path may be caused to travel at a constant linear speed relative to the stylus, and means adapted upon rotation of the fusees tocause the turntable and the usees to travel in a rectilinear path `with respect to the stylus.

5. A machine. for use in the reproduction of sound comprising a rotatably mounted drum, a rotatably mount-ed usee, flexible member secured at one of its ends tothe drum and at its other end to the fusee adapted upon rotation of the drum in one direction to be unwound from the drum on to the insee and upon rotation of the drum in the opposite direction to be unwound lfrom the fusee on to the drum, a governor in driving engagement with the drum adapted to ensure its rotation at a constant angular velocity, a second fusee associated with the first-mentioned fusee adapted to rotate an equivalent speed to the first-nientioned tusee, a turntable in driving engagement with the fusees upon which a record disc is adapted to be supported, a stylus adapted to operate upon the sound record disc and to travel in a spiral path relative thereto, a second flexible member connected at one of its ends with the secf ond-mentioned fusee, a weight connected with the other end ot the second flexible member adapted tov provide a constant driving effort whereby the said spiral path may be caused to travel at a constant linear speed relative to the stylus, and means adapted upon rotationof the usees to cause the turntable and the 'fusees to travel in a rectilinear path with respect to the stylus.

6. A machine for use in the reproduction .liessen of rsound comprising a rotatably mounted drum, a rotatably mounted fusee, a fiexible member secured'at one of its ends to the drum and at its other end, to the fusee adapted upon rotation of the drum in one direction tfo be unwound from the drum on to the fusee and upon rotation of the drum in the opposite direction to be unwound from the fusee on to the drum, a governor in driving engagement with the drum adapted to ensure its rotation at a constant angular' velocity, a second fusee associated with the tiret-mentioned fusee adapted to rotate at an equivalent speed to the first-mentioned fusee, a turn-table in driving engagement with the fusees upon which a record disc is adapted to be supported, a stylus adapted to operate upon the sound record disc and to travel in a spiral path relative thereto, a second flexible member connected at one of its ends with the second-mentioned fusee, a weight connected with the other end of the second flexible member adapted to provide a constant driving efort whereby the said spiral path may be caused tol travel at a constant linear speed relative to the stylus, means adapted to rotate the drum in order to raise the weight, means adapted upon rotation of the drum in order to raise the weight to release the driving engagement between the drum and the governor, and the driving engagement between the fusces and the turntable, and means adapted upon rotaA tion ot the fusees to cause the turntable and the fusees to travel in a rectilinear path with respect to the stylus.

7.k Ar machine 'for use in the reproduction of sound comprising a bed plate, guides secured tothe bed plate, a carriage mounted upon the bed plate slidably engaging with the guides, a drum rotatably mounted in the carriage, a fusee rotatably mounted in the carriage, a fienible member secured at one of' its ends to the drum and at its other end to the fusee adapted upon rotation of the drum in one direction to be unwound from the drum on to the fusee and upon rotation ot the drum in the opposite direction to be unwound from the fusee on to the drum, a

governor in driving engagement with the i drum adapted to ensure its rotation at a constant angular velocity, a second fusee coaxially mounted in the carriage with the first-mentioned fusee adapted to rotate at an equivalent speed to that of the first-mentioned tusee, a turntable in driving engagementy with the usees upon which a record disc is adapted to be supported, a stylus adapted to operate upon the sound record disc and to travel in a spiral path relative f 'III thereto, a second flexible member connected at one of its ends with the second-mentioned fusee, a weight connected with the other end of the .second flexible member adapted to provide a constant driving effort whereby the spiral path in the record dise maybe caused to travel at a constant linear speed relative to the stylus, means adapted to rotate the drum in order to raise the Weight, means adapted upon rotation of the drum in order to raise the weight to release the'driving engagement between the drum and the governor, and the driving engagement between the usees and the turntable, and driving means adapted to be actuated by'rotation of the fusees in order to Cause the oarriage, the turntable, and the fusees associated therewith, to travel in a rectilinear path with respect to the stylus..

In testimony whereof I have signed my name to this specification.

CHRISTOPHER COLLARO. 

